Timeline Syncing in Twitterrific 5 (iOS)

Where is Tweet Marker in Twitterrific 5?

In Twitterrific 5, we've added support for timeline syncing
using both Apple's iCloud service and the Tweet Marker service. You
can switch between services by going to the in-app settings and
selecting which you'd like to use under "Timeline Sync." Here, you
can also choose how you'd like syncing to behave. Twitterrific 5
can either disable syncing entirely, show the timeline marker,
scroll to the shown timeline marker, or scroll to the marker
without displaying it in the timeline.

What is the marker? In Twitterrific 5, the position marker
displays as a purple bookmark icon at the top of the most recently
synced tweet position.